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Forum: OpenGauge / MPGuino FE computer

08-24-2014, 01:44 PM

Replies: 15

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Posted By P-hack

interesting, fyi I don't reach for discrete chips...

interesting, fyi I don't reach for discrete chips much anymore, since the micro-controllers are so cheap and I have a better chance of debugging them.

There is a standard arduino example in...

Forum: OpenGauge / MPGuino FE computer

08-21-2014, 01:36 PM

Replies: 15

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Views: 3,778

Posted By t vago

With 120,000 pulses per mile, and going 78 MPH,...

With 120,000 pulses per mile, and going 78 MPH, your MPGuino is seeing a pulse about every 385 microseconds. That's about the time needed for the MPGuino hardware to respond to the interrupt request...

Forum: OpenGauge / MPGuino FE computer

08-20-2014, 04:56 PM

Replies: 15

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Views: 3,778

Posted By P-hack

that is a lot of pulses, given the delay changes...

that is a lot of pulses, given the delay changes the top speed then that seems like the problem. A dedicated atmega chip might be able to keep up with it, but not one that is monitoring injectors...

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